Simplify the expression. Use positive exponents. Assume variables represent nonnegative numbers.
A. 3x
B. 3x8
C. 3
D. 3x4
Answer: D
Mathematics
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Simplify and evaluate using a calculator.
A. 18
B. 
; 81
C. 
; 0.05555556
D. 
; 0.05555556
Mathematics
Simplify. Assume that no radicands were formed by raising negative quantities to even powers.16
- 4
A. -13
B. -19
C. 12
D. 20
Mathematics
Solve the application.Peter must practice the piano 14
hours per week. He has already practiced 7
hours. How many more hours does he need to practice?
A. 7
hours
B. 5
hours
C. 6 hours
D. 6
hours
Mathematics
Solve.x2 + 2x - 8 = 0
A. 4, 2 B. -4, 1 C. 4, -2 D. -4, 2
Mathematics